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Measurements of the wavelength dependent extinction of aerosols by cavity ring down spectroscopy
Literature Information
Publication Date
2010-02-23
DOI
10.1039/B923758E
Impact Factor
3.676
Authors
Rachael E. H. Miles, Svemir Rudić, Andrew J. Orr-Ewing, Jonathan P. Reid
View Original
Abstract
Cavity ring down measurements are performed on accumulation mode aerosol, 240 nm to 700 nm in diameter, over a range in wavelength, extending from 540 to 570 nm. We demonstrate that the measured variation in extinction efficiency with wavelength can be used to retrieve the dispersion in the real part of the refractive index. These measurements are contrasted with previous aerosol cavity ring down studies which have focussed on investigating the variation in optical extinction with particle size parameter through a variation in the sampled particle size distribution. In the measurements reported here, the gradient in the optical extinction can be recorded with fine resolution in size parameter (∼0.02) through variation in laser wavelength. Such an approach, as well as allowing a determination of the dispersion in refractive index, could be used to constrain the retrieval of refractive index at a single wavelength.
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Source Journal
Physical Chemistry Chemical Physics
CiteScore:
5.5
Self-citation Rate:
10.3%
Articles per Year:
3036
Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
Recommended Compounds
trans-4-(4-Morpholinyl)cyclohexanol hydrochloride (1:1)
CAS Number:
1588441-09-1
Molecular Formula:
C10H20ClNO2
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